Our company is a very professional and reputable supplier and exporter of N-Acetyl-D-Glucosamine ,. Glucosamine sulfate sodium chloride , Glucosamine sulfate potassium chloride, Glucosamine hydrochloride.Also the chitosan series----. Chitosan oligosaccharide ,Carboxymethyl chitosan and Chitosan. We have been dedicating to supplying full line of these products with high quality used in health food ,functional food and natural medicine industries for 10 years.